SIZE: Fits 5/16" (8mm) shank hand drill bits and motor drive drill bits. Cutting diameter options: 7.93mm, 9.52mm, 12.7mm. MATERIAL: Made from YG6 hard alloy with sharp edges, high hardness, precise positioning, smooth cutting performance, and impact resistance. APPLICATION: These 5/16" end mills are suitable for use on solid wood panels, MDF, chipboard, and design profiles, providing smooth and clean cuts for furniture making. Ideal for milling grooves in picture frames, signs, clocks, posts, and other woodworking projects for creating keyhole hangers or cable channels. FEATURES: Hard alloy blade with high-quality welding for stable performance and durability, reducing the risk of breakage or tilting during operation. Sharp and long-lasting edge with arc curve design for efficient chip removal and improved cutting efficiency. INCLUDES: 1 x T-slot cutter for 1/2" hex screws; 1 x T-slot cutter for 3/8" hex screws; 1 x T-slot cutter for 5/16" hex screws. NOTE: Measurements are manually taken; please allow 13 cm variation. Color may vary slightly due to lighting and display differences. Actual product may vary slightly from images. Quantity delivered corresponds to main image.