Fits into the back of the body and locates/holds the strings. Easy to install and convenient to use. Package includes: 6pcs string mounting ferrules. Buy Solary Baking Infrared Paint Curing Lamp, 1000W 110V Handheld Short Wave Infrared Paint Dryer Lamp for Car Bodywork Repair Ideal for new build bodies or fits into existing recesses, but please verify the size needed for your body before purchasing. These guitar mounting ferrules can increase the pressure of the strings on the bridge, make the strings vibrate more effectively, improve the resonance and increase the delay, make the sound stronger Buy 2 Set Guitar Ferrules Guitar String Caps Ing Buckle Through Body Ferrules Bushings For Guitar Musical Instruments Parts 6 Pcs Per Set Black NOTE They are indeed fit for most guitar bodies. Metal material, Great replacement for your old, broken ferrules. 8 String Guitar Metallor Guitar String Mounting Ferrules Through Body Mounts String Caps For Tele Strat Style Electric Guitar Bass Parts Replacement Set Of 6pcs Black Telecaster String Ferrules Ideal for new build bodies or fits into existing recesses, but please verify the size needed for your body before purchasing. Size: Small hole diameter: approx.2.5mm/0.1inch; Big hole diameter: approx.6mm/0.24inch(inner) 10mm/0.4inch(outer); Total length: approx.9.5mm/0.37inch; Insertion part into body diameter: approx.8.2mm/0.32inch. The interior hole tapers from 6mm to hold the ball end of the string down to 2.5mm at the tip to assist in easy string mounting - no more frustrating jabbing around trying to get the damn string through the mount hole. PRODUCT DESCRIPTION Set of 6 brand new black string mounting ferrules for through body strung guitars like Tele's etc. 9.5mm overall length mounting into a 8.2mm diameter hole in the guitar body with an 10mm diameter collar. Perfect for that string through body build or repair.