1. Product name: hand taper reamer 1/8-1/2'' (3.18-12.7mm); Hand taper reamer 5-16mm2. Product material: 45# steel3. Product taper: 1:104. Product weight: 90g of 1/8-1/2'', 105g of 5-16mm5. It is suitable for reaming the taper hole, chamfering and deburring on the wooden board to facilitate the counterbore of the screw.6. The reamer is 6 fluted with a T-Handle and comes with handle grips for extra leverage to help keep the holes round7. Made of hardened carbon steel and ground steel edge's8. This steel reamers has the properly tapers the holes for bridge pins or endpinsSpecification: Package Weight One Package Weight 0.11kgs / 0.24lb One Package Size 15cm * 5cm * 5cm / 5.91inch * 1.97inch * 1.97inch Qty per Carton 302 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 302 pcs = 53454 pcs40HQ: 412 cartons * 302 pcs = 124424 pcs