About this 3D model

Holder with magnetic base for M8,M10,M12,M16 Upper holes 20mm deep: Diameter: 9.8/ 16.3/ 16/ 12.8 Two slots 2mmx20mm And a long slit 4mm wide Bracket with magnetic base for M8,M10,M12,M16 Upper holes 20mm deep: Diameter: 9.8/ 16.3/ 16/ 12.8 Two slots 2mmx20mm And a long slit 4mm wide