Side screw holes are unified as for M3. Each coupling is supplied with four screws. 1 x brass coupling. 2mm to 6mm. 6mm to 6mm. 3mm to 6mm. There are many kinds of joint couplers on sold. 4mm to 6mm.
Side screw holes are unified as for M3. Each coupling is supplied with four screws. 2mm to 6mm. There are many kinds of joint couplers on sold. 3mm to 6mm. 1 x brass coupling. 6mm to 6mm. 4mm to 6mm.
