SPI 910175 - 4pc 12" Combination Square Set (Made to Order) 48-22-0159 2-stage TEK modes reduce impact

2-stage TEK modes reduce impact power during final stages of fastener seating in thick or thin metal

Diameter 6" Thickness 2" Arbor/Bore 5/8"-11 Threaded Abrasive Material Aluminum Oxide / Zirconia (A/Z) Grit Size 16 (Coarse) Max RPM 6

4 bearings and a hey key

Stonewashed Finish: The rugged stonewashed blade hide scratches from use

Accessory storage box

SPI 910175 - 4pc 12" Combination Square Set (Made to Order) 48-22-0159 2-stage TEK modes reduce impactCombination Square Set 4 Piece Center head (made of cast iron): To locate center of cylinder with diameter (d): 1. 181" DIA 3. 937" DIA, Accuracy: 0. 006" Protractor head (made of cast iron): Set the blade at desired angle to an edge of a workpiece, and can be used to measure angle range: 0 180, accuracy: 20min. Square head (made of cast iron): Set the blade at 90 or 45 to an edge of a workpiece, Accuracy: 8min for 90 square, 10min for 45 square12"