New replacement Singer sewing machine motor brush cap, compatible with the 221 Featherweight and the potted 15-91 & 201-2. You will receive one cap. Replaces part #193543. Measure approx 3/8" in diameter across the bottom. *Please note that this cap will not fit Featherweight motors with bakelite housings (often found on the white 221K, 222K and later era Canadian machines).