include a pedestal portion 22 and holder portion 24 the pedestal portion 22 is configured to allow the block 20 to be attached to the drum or other piece of equipment in the embodiment shown in fig1 the pedestal portion 22 has a curved bottom congruent to the shape of a drum exterior the congruent shape allows the pedestal portion 22 to be easily welded onto the drum the holder portion 24 includes a front face 52 and a rear face 54 the holder portion 24 portion of the block 20 has a bore 26 between the front face 52 and the rear face 54 the bore 26 allows the shank 34 of a wear sleeve 30 to be inserted into the holder portion 24 the bore 26 and wear sleeve 30 are generally disposed about a central longitudinal axis 2 the wear sleeve 30 also has a forward portion 32 the forward portion 32 often has a shoulder 42 which transitions from a first diameter of a shank 34 of the wear sleeve 30 to a second larger diameter of the forward portion 32 the forward portion 32 may also have a tapered front surface 44 the wear sleeve 30 is structured and arranged to accept a cutting tool not shown having a shank which fits inside the wear sleeve 30 and a forward tip made from hard materials such as cemented tungsten carbide polycrystalline diamond or other suitable material the rear portion of the shank 34 of the wear sleeve projects axially from the bore 26 the portion of the shank 34 of the wear sleeve 30 which projects from the.