Precision 6-in-1 mechanic carpenter's square tool: a rules, angular , sliding calipers, protractors, and drilling guides for measuring angles, checking verticality, setting saw guides, sawing, drawing circles, marking plates for tearing, leveling, finding roof spacing, etc Easy to use: Metal woodworking squares with English unit triangles save a lot of time for your woodworking project; You can quickly measure or mark angles from 0 to 90 degrees through simple operations 3-15mm template hole: This is a solid combination square tool with precise millimeter deep hole markings; 3-15mm template holes help you quickly complete drilling work without the need for lengthy template searches; A multi-functional woodworking tool suitable Durable quality: Aluminum woodworking square, with a base width of 2.2 centimeters and a 4mm thick scale on the surface, this woodworking triangle ruler is more durable; Durable aluminum corner profiles; Not easily damaged, and woodworking square tools are also not easily worn out Colour:black Material:alloy Package Contents: 1x 7-inch aluminum alloy frame square 1x heavy deep hole construction pencil, 1x mechanical carpentry pencil with built-in pencil sharpener 18x refill 1x horizontal 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.