This Sliding Screen Door Spring Tension Roller has a 2-1/2" (63.5 mm) steel tension spring. The 1/4" (6.4 mm) wide steel ball bearing wheel has a center groove.
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Housing Material: Steel
Roller Material: Steel
Roller Outside Dimension: 1"
Roller Profile: Concave
Roller Width: 1/4"
Steel Length: 2-1/2"