Aluminum alloy material, anodized more exquisite. Can be used with 1/2 large fly torque wrench. The size space is designed to be moderate, close fit, not easy to slip, and that the product uses more teeth. Suitable for emonda T47 and DUB T47 16-tooth bottom bracket and other 16T T47 bottom brackets with a diameter of 52.2MM. High Wear- and excellent durability. Specifications: Weight: 42 g/Pcs Height:20mm Colour:silver Material:Aluminum alloy Package Contents: 2 * Bicycle Bottom Bracket Remover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.