Specifications:Material: Aluminum alloySize:300*140*50mm/ 11.81*5.51*1.97Notes:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3cm measuring deviation due to manual measurement. DIY Woodworking Round Wood Tenon Hole Drill Jig Carpenter Punching Locator Drilling Set Features: Aluminum alloy production, good quality, wear resistance, anti-fall, anti-corrosion, not easy to oxidize.Carpenter punching locator, firmly positioned and accurate.