Texture Inserts for Hammers FRETZ (MKR-7/HMR-7/HMR-6)The Fretz Texture Inserts provide the metalsmith with a wide range of textures using a single hammer at a low cost. Designed to work with the Fretz insert hammers MKR 7, HMR 7, or HMR 6 They simply insert into the hammer and are quickly secured with small screws and a hex wrench. Two different textures can be inserted at any time, and quickly swapped as required. They come as a set of 8 textures as below Set includes: HTX 1 Beach Pebbles HTX 2 Linen