Amp Casters for Fender with sockets & screws set of 4. package of 4 wheels including mounting sockets and screw primary used by Fender since 1960s till today. Heavy duty ball-bearing swivel amplifier casters keep you rolling in style. Don't break your back; give it a break with "Pop-in/out" casters for your Fender or others. Max loading capacity 35kg/pc = 140kg/set of 4. Fits all vintage blackface and silverface Fender amps which were prepared for swivel casters as well as its reissues, the BXR Enclosures, Tone Master Enclosures, Showman 50, '94 TwinŸ, Custom Vibrasonic, Pro Reverb, "The Twin", Concert, Pro 185, Dual Professional, Rumble 410, Super-Sonic 212, '65 Twin Custom, Ultimate Chorus DSP, Cyber-Twin, Fender Pro Series Bass Enclosures, Bassman TV Panel Series, BassmanŸ Series Enclosures, Stage 160 DSP, MH-412 Enclosure, Steel King, and Jazz King amplifiers. Set includes four casters, mounting cups and screws. replaces Fender p/n: 0994000000