uxcell 10 Pieces 0.51" Dia Head Taper Polisher Bit Mounted Point Green Product Name : Mounted Point;Head Size : 13 x 4mm / 0.51" x 0.16" (L*D) Shank Diameter : 3mm / 0.112";Total Length : 44mm / 1.73" Material : Abrasives, Metal;Main Color : Silver Tone, Green Weight : 22g Package Content : 10 x Mounted Point