Facom FM-31.16X17 tappet open-end wrench 16 x 17 mm

Tappet wrench for 16 mm and 17 mm fasteners

The Facom FM-31.16X17 is a double-ended open-end wrench sized for 16 mm and 17 mm nuts and bolts. It is built for mechanics and technicians who need a single tool covering both common sizes during assembly or disassembly work. The ratcheting configuration lets you turn fasteners without removing the wrench between strokes.

Alloy steel construction with satin finish

Made from alloy steel, the wrench resists rounding and wear under high torque. The satin finish reduces glare and provides a secure grip when hands are oily. At 9 27/32 in. overall length and 1 11/16 in. overall width, the tool reaches into typical engine bays while the slim open-end profile fits confined tappet clearances.

Replaces carrying two separate fixed wrenches

This wrench consolidates the 16 mm and 17 mm sizes you would otherwise keep as two individual pieces, saving space in a tool roll or drawer. The jump is worth it when you regularly service components using both sizes and want faster changeover without hunting for the second wrench. Buyers needing drive sizes outside 16 mm and 17 mm will need additional tools.