Features: For one b-ridge pin hole reamer tapered 5-degree 6 fluted guitar woodworker luthier tool Accurate holes for a better fit! This steel reamers has the properly tapers the holes for b-ridge pins or end pins. These Ultra s-harp reamers are 5-1 or 2 long, 6 fluted with a T-Handle and comes with soft vinyl handle grips for extra leverage to help keep the holes round. The 5-degree 6 fluted reamer tapers from approximately 1 or 8" to 1 or 2", with 3" fluted cutting length. Made of hardened carbon steel and ground steel edge's. It works for Vintage-style pins, as well as modern others. Also works nice for Any 3-degree b-ridge pin hole applications. Specifications: Material: 45 Steel Color: As p-icture shown Usage: hinge taper, for use in wood sink holes, chamfers, back taper Size: 1 or 8-1 or 2"(3-13mm) Package size: 170 x 50 x 10mm Package weight: 80g Packing list: 1 x B-ridge Pin Hole Reamer Tapered Tool