LDR Industries 506 6264 Slip Extension, 1-1/2" x 12", White LDR 506 6264 PVC Slip Extension, 1-1/2-Inch X 12-Inch. Slip Extension Tube. 1 1/2-Inch x 12-Inch. PVC construction. Includes nut and washer. Limited Lifetime Warranty. Slip Extension Tube 1 1/2-Inch x 12-Inch PVC construction Includes nut and washer Limited Lifetime Warranty