The draper drain blaster force cup is a replacement 150mm diameter cup designed specifically for use with the draper 21837 drain blaster system. This spare component ensures you can maintain optimal performance of your drain clearing equipment when the original force cup becomes worn or damaged. Manufactured by draper, this genuine replacement part maintains the same quality and specifications as the original cup supplied with the 21837 model. The 150mm diameter cup is engineered to create the necessary seal and pressure required for effective drain clearing operations. Ideal for plumbers and maintenance professionals who rely on their drain blaster for regular blockage clearing work, having a spare force cup on hand minimises downtime and ensures you can continue working efficiently. This replacement cup is particularly useful for those working in commercial or industrial settings where equipment reliability is essential. Contents bull 1 x 150mm force cup for 21837 drain blaster