Howex 100 Spareparts Movies Howex Corp. Distributors For Repair Graft Quality Large Bone Grafts Plasticity of Howex Bone Graft Experiments by G. Ullmark   Spareparts Below you see the parts of the Howex 100 Bonemill. Click picture to enlarge. A1 Millhouse A2 Plonger A3 Bearings A4 Anvil / A5 Screw for Anvil B1 Barrel B2 Barrel B3 Barrel B4 Locking Nut B5 Handle C1 Clamps C2 Key for Locking Nut C3 Guidepin