Slant shank presser feet are a Singer exclusive shank that features a presser bar connecting foot shaft that 'slants back' towards the rear of the sewing machine.
1/4" Foot w/ Guide, Singer Slant
Slant Shank quarter inch (1/4") foot for scant, and full 1/4 in. seams and topstitching- even doubles as a stitch-in-the-ditch foot.

Carded - Singer 301, singer 401, 403, 404, 417, 500, 503, 600, 603, 604, 620, 625, 626, 628, 629, 630, 635, 636, 638, 639, 645, 646, 648, 649, 714, 719, 724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 900, 920, 925, 935U, 100G, 1030, 1036, 1060, 1100, 1200, 1411N, 1411U, 1425N, 1425U, 2000, 2001, 2005, 2010, 4552, 4562, 4572, 4610, 4611, 4613, 4617, 4622, 4623, 5910, 5932, 6230, 6233, 6234, 6235, 6244, 6267, 6268, 7000, 7004, 7005, 7011, 7028, 7029, 7033, 7035, 7037, 7043, 7050, 7060, 9005, 9008, 9010, 9015, 9018, 9020, 9022, 9027, 9030, 9032, 9034, 9044, 9110, 9113, 9117, 9124, 9130, 9133, 9134, 9137, 9143, 9210, 9217, 9224, 9240, 9323, 9334, 9410, 9416, 9417, 9420, 9423, 9430, 9432, 9444, 9900, 30920, 93220, 93234, DX14C

alternative # 60612

1/4 in (Quarter Inch) Foot

• Compatible with Babylock Sewing Machine Models:
• 
  BL1550, BL1556, BL16, BL18, BL18A, BL2160, BL22, BL23, BL23A, BL37, BL40, BL6150, BL6200, BL6300, BL66, BL6600, BL67, BL6700, BL6800, BL7800, BL8800, BLCC, BLCC2, BLDC, BLDC2, BLG, BLG2, BLG2-NZ, BLL, BLL2, BLN, BLQC, BLQC2, BLR, BLR2, BLR3, BLSO, BLSR, ESE, ESE2, ESG, ESG2, ESG3, ESI, ESI2, ESL, ESN, ESP & INT.
• Compatible with Brother Sewing Machine Models:
• 
  BC1000, CE4000, CE5000PRW, CS100T, CS6000, CS6000i, CS6000T, CS8072, ES2000, EX660, HE120, LB6770 PRW, LS1217, LS1717, Innovís 40, Innovís 80, Innovís 1000, Innovís 1500D, Innovís 2500D, Innovís 4000D, Duetta 4500D, Quattro 6000D, Innovís 900D, NX200, NX250, NX400, NX450, NX450Q, NX600, NX650Q, PC210, PC210PRW, PC2800, PC3000, PC420, PC420PRW, PC5000, PC6000, PC6500, PC7000, PC7500, PC8000, PC8200, PC8500, PC8500D, PE300S, PE400D, PS1000, PS1250, PS1800, PS1950, Pacesetter PS21, PS2100, PS2200, PS2300, PS2500, QC1000, SE-270D, SE350, ULT2001, ULT2002D, ULT2003D, VX1120, VX1140, VX1250, VX1400, XL2121, XL2230, XL2600, XL2600i, XL2610, XL3022, XL3025, XL3027, XL3030, XL3100, XL3200, XL3500, XL3500T, XL3510, XL5500, XL5600, XL5700, XL6562, XR37 & XR46C
• Singer Sewing Machine Models:
• 
  3709, 6510, 7350 & 7463 and any other top loading bobbin machine that uses the standard snap on foot.