Supports the following standards: FM 1-T 180, FM 5-515 Compaction mold with a volume of 1/13.33 ft3, cold-rolled steel tubing, plated for rust resistance. Mold dimensions are 6" ID x 6.1" H with a 2.5" detachable collar. Collar extension and solid base plate can be clamped on either end of cylinder. Compatible with H-4169 Compactor. LBR test requires H-4147 spacer disc, sold separately.