規格: 輪子直徑=19mm, 23mm, 25mm, 27mm
Specification: Diameter of roller=19mm, 23mm, 25mm, 27mm
適用玻璃挖孔直徑10~12mm, 玻璃厚度4~6mm
Use for cutting hole diameter of glass=10~12mm, thickness of glass=4~6mm
材質: 塑鋼+銅
Quality: POM+brass