Thetford Replacement Cooker I-Drive Knob Black & Silver $25.00 For spinflo ovens, knob is approx 33mm diameter on top, 40mm at base. Thetford Replacement Cooker I-Drive Knob Black & Silver quantity — OR — Add to cart Categories: PARTS, STOVES-OVENS-GRILLS Description Description For spinflo ovens, knob is approx 33mm diameter on top, 40mm at base. Related products JVC Stereo Unit KD-R671 $195.00 Add to cart Carafoot Jack Pad – Set Of 4 $49.90 Add to cart EMOVE Remote for EM303A & EM305 $199.00 Add to cart Lever Release Door Retainer-Black $42.00 Add to cart