The Stiletto TBM-MR is a 3 oz replacement milled hammer face for Mini-14 hammer models. The replacement hammer face has a durable steel milled face for gripping nail heads to prevent slipping. The replacement kit contains a replacement steel face, bolt, hex key, lock washer, Loctite bottle, instructions, and leather washer part (for older t-bones). The TBM-MR replacement face is made of heat treated high-carbon steel for long service life.