Knurled Thumb Screws, M6x30mm Flat Brass Bolts Grip Knobs Fasteners 10Pcs Dark Purple total capacity for all 4

total capacity for all 4 casters is 15kg (calculated by 3 casters )

35mm 1/4-inch Shank Size

Push Pull type

Groove Angle: 90°

or other such system and splits it into many of them

Knurled Thumb Screws, M6x30mm Flat Brass Bolts Grip Knobs Fasteners 10Pcs Dark Purple total capacity for all 4Description: 1. Made of brass, this thumb screw Knob is good for needs requiring high appearance, has corrosion resistance, rust resistance, good wear resistance, well fastening function and long lasting service than other material. 2. Applied in home appliances, communications industry, automotive industry, etc. Widely used in the installation, maintenance, and fixing of various daily needs: such as light covers, musical instruments, mechanical