[Upgraded] Strong rings to reinforce around the middle part of the knobs - kinda like a tight sleeve around them to they can take heavy duty and 't be cracked . No tool required - install the part YOURSELF and quickly get your range oven burner back to work within few minutes. [Quality ]Strong rings to reinforce around the middle part of the stove knob replacements to they can take heavy-duty and 't be cracked . [Replaces Part Number] DG64-00473A, DG64-00473B, AP5917439, PS9606608, EAP9606608, B01GV9ZRM4, 3447565. You can install the knobs without any tools and quickly get your range oven burner back to work. If your stove is black, you will need DG64-00473B instead and this knob 't match your color. [SAVE YOUR MONEY] Replacement your broken for oven knobs, inexpensive way to fix or repair a range, from spending more money to buy a new stove again. The oven knobs replacements are direct replacements for a proper fit and easy installation. This is a manufacturer substitution. Functional equivalent to prior parts. Colour:silver Material:plastic + metal Package Contents: 6 x stove knob covers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.