I bought the mandolin version and fitted it to my Gibson. There's a lot of extra material to remove, but the result was great. Easier tuning (the old nut had tight slots for the A strings), better intonation. Later I used one of the extra frets in the package to fix a tenor guitar. For that, I simply filed the necessary ledges in the existing nut and widened the string slots. It would be nice if Stew-Mac would also sell the offset tang frets separately, for retrofitting to an existing nut.
The bone nut was easy to install. I sanded the length and depth with a table sander. The instructions are complete and easy to follow. Four zero frets of different sizes are included in the banjo kit--you try the smallest and work your way up until you have no open string buzz. Use medium viscosity cyanoacrylate (available from Stewmac) so you have time to set the nut and fret properly. I'm pleased with the results, improved tone, and hammer-ons and pull-offs are more defined.
The Zero Glide performs like the manufacturer claims it will. It took less than one hour to complete the installation and have the guitar playing. The nut I removed was cheap plastic and the thin wires had cut down into the nut to the point that there was severe fret buzz on the open strings. The Zero Glide cured that and has all of the strings at the same level. I used a disc sander to shape the nut to length and height in a few minutes. About five more minutes and the nut was polished. The installation looks good. I suggest a person view the manufacturer's installation video before doing the installation.
I bought two of these, one Gibson-style and one Fender-style for two of my favorite project guitars, an Epiphone LPX and my Jazz-O-Caster parts guitar. The Gibson was a near drop-in, needing only some trimming and shaping for a perfect fit. The Fender was slightly more challenging, as the neck on the Jazz-O-Caster never saw the inside of any Fender-approved factory! It required a 1/32" shim underneath for a proper fit, and some sanding to make room for the tang. There was a marked increase in the brightness of tone for both instruments, as well as improved intonation. This is MUCH easier than installing a traditional nut, and nearly foolproof IF you follow the instructions. Thanks, Stewart-Macdonald, for stocking such a well-engineered product.
ZS-7F Slotted Replacement Nut for Guitars (Common on Fender)
Array ( [0] => Array ( [id] => 3009 [model] => ZS-7F [quickbooks_model] => Zero Glide:Slotted:ZS7F Bone [preferred_vendor] => Dalian Mantech Guitar Co.,Ltd (Samsung) [preferred_vendor_list_id] => 80001B3F-1324671482 [base_model] => [labels] => Bone,Black Delrin +$10;Right-Handed,Left-Handed [var_matrix] => 0,0 [visible] => 1 [is_zeroglide] => 1 [is_slotted] => 1 [brand] => zeroglide [type] => products [category] => guitar [sub_category] => fender [instrument] => guitar-slide [product_url] => zs-7f [old_url] => http://www.zeroglide.com/product/zs-7f-fender-slotted/ [product_name] => ZS-7F Slotted for Guitars (Common on Fender) [product_title] => ZS-7F Slotted Replacement Nut for Guitars (Common on Fender) [net] => 16 [retail] => 0 [mapp] => 34.99 [cost] => 4.25 [sellable] => 1 [left_hand] => 0 [stock] => 459 [reorder_point] => 0 [qty_on_hand] => 541 [qty_on_so] => 82 [effective_qty_on_so] => 82 [qty_on_po] => 0 [qty_sold_1_months] => 44 [qty_sold_3_months] => 128 [qty_sold_6_months] => 322 [qty_sold_7_months] => 527 [qty_sold_8_months] => 589 [qty_sold_9_months] => 694 [qty_sold_10_months] => 728 [qty_sold_11_months] => 780 [qty_sold_12_months] => 593 [addons] => 3083,3084,3085,3086 [weight] => 0.10 [length] => 5 [width] => 4 [height] => 1 [product_description] =>The Zero Glide Replacement Nut System borrows the "zero fret" concept to reduce string contact in the nut by up to 93%, increasing tuning stability, playability, and open string tone. It only takes a few minutes to install with absolutely no permanent alteration to your instrument. For Fender Style Guitar.
*The ZS-7F is designed to fit either a flat or radiused nut shelf. Leave the middle nub for flat, or sand it down for a radius.
Also available in Black Delrin.
Note: May not fit specific models. Check the sizing guide to be sure.
[product_length] => 42.8mm (1-11/16") [radius] => 9.5" [production_height] => 4.9mm (13/64") [height_end] => 3.95mm (5/32") [fingerboard] => 2.9mm (7/64") [thickness] => 2.8mm (7/64") [fret_size] => L, M, H, J (.035", .039", .043", .051") [string_spacing] => 34.8mm (1-3/8") [string_gauges] => .046", .036", .026", .017", .013", .010" [special_notes] => [product_option_labels] => Material;Hand [product_option_0] => Bone [product_option_1] => Right [product_option_2] => [is_on_forecasting_report] => 1 [img_urls] => 1-front.jpg,2-back.jpg,3-diagram.jpg [alt_info] => zb-12f,Unslotted Version [alt_product_id] => 3015 [upc] => 875116002565 [always_in_stock] => 1 ) )