Medium to Heavy Feed Dog, Brother #111860101 discountable you can add an extra

you can add an extra layer of fabric to create a pocket to insert a filter for an added layer of protection

This beaded silver chain has swivel clips at each end

Singer 1360 Sewing Machine Instruction Manual (Model 1360) - 82 Pages

and 503 - use far right pin on Slant-O-Matic & Rocketeer models)

then return the lever to its original position

Medium to Heavy Feed Dog, Brother #111860101 discountable you can add an extraGuaranteed to fit Brother Sewing Machine Models: B755 3, DB2 B101, DB2 B201, DB2 B736, DB2 B737, DB2 B737 MK2, DB2 B738, DB2 B755 MKII, DB2 B755 MKIII 3A, DB2 DD7100, S 7550A, SL1010, SL1110, SL2010, SL2110, SL710A, SL737A, SL755 MARKII Alternate Part Numbers: 111860121