Plastic End Cap with bellows fit 2.50  in OD Sq. Tubing Plastic End Cap with bellows fit 2.50 in OD Sq. Tubing  Ref: P280-250
Plastic PVC End Caps
End Caps OD 2.50 x 2.50 inch Steel Tube. This cap has bellows, which help keep the cap in place. (Minimum Order is $10.00) Volume discount for orders over 100 pcs.