Half Round Sanding Sticks Set of Six. Sanding Sticks in six grits; 6/0, 4/0, 3/0,2/0, 1 and 2. Tapered and half round for flat surfaces. Excellent for all precious metals and PMC. Each stick is 23.5cm long with a sanding surface 15cm long which tapers from approx 2cm to 0.8cm at the tip.