All the cam locks on my old Manfrotto 055PROB tripod broke. As the original spare part (R190,387) is absurdly expensive (needed six), I drew my own.

Modified the original shape for easier printing and better durability.

Substitute part R055.534: Replaces R190,387, R190,390, R190,392, R190,396
This part also fits: 055CL, 055CLB, 055MF3, 055MFV, 055PRO, 055PROB, 055V, 055WNB, 055XB, 055XV, 055XWNB, 055XPROB, 190CL, 190CLB, 190MF3, 190MF4, 190MFV, 190NAT3, 190PRO, 190PROB, 190V, 679, 680, 682, 694, 695, 351MVB2, 475, 475B, 557B, 558B, 561BHDV, 561BHDV-1, 562B, 562B-1 562B-1, 679B, 680B, 681B, 682B, 745B, 745MF3, 755B, 755MF3, 755XB, 756B, 756MF3, MVM250A, MVM450A, MVM500A, MVT535AQ