RIDGID's 418 Oiler's durable pump assembly and heavy-duty reservoir provide a quick & easy way to lubricate pipes during threading. The material withstands abrasion, is lighter than metal, and does not rust. Material is so strong that under normal use, no dents will form on impact, or shape changes will occur over time. As a result, the drip pan will fit squarely on the reservoir time after time.