ITEM NAME:3xDrill bit Staggered Conic Drilling machine Trimmer HSS Titanium 4-12m 20mm Hot Descriptio n Description: 1. It is recommended to drill a workpiece with a stainless steel hardness of 25Â ° or less. 2. Recommended speed 250-400. 3. Titanium plating material: It adopts advanced titanium-plated gold technology for surface treatment to improve the anti-oxidation and corrosion resistance of the drill bit. Specifications: Name: hex handle straight groove step drill Pagoda drill twist drill plate hole opener 4-32,4-20,4-12 Dimensions: shaft 6.35mm, length is 77+24.6mm, 52+22mm, 42+24.7mm Weight: 200g Color: gold Material: metal + plastic Package Included: 3pcs (4-12, 4-20, 4-32) Whatever the ending's perfect or not, you can't disappear from my world 3xDrill bit Staggered Conic Drilling machine Trimmer HSS Titanium 4-12m 20mm Hot.We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. We'd like to settle any problem in a friendly manner. Weight: 200g. Color: gold. Descriptio n.