Compatible Models: These impeller bolts are designed for 180 and 280 pool cleaners. Part number C-55 C55. DURABLE: Made of ABS and PC materials, proven to it is durable because the system works every day. Runs like new: the white impeller screws always break after exposure to pool chemicals, making them brittle. Set of 6 plastic impeller screws and 6 replacement gaskets for use with pool cleaners. Easy to install: Install this replacement impeller screw set with no hassle and No problem with these screws installed on pool cleaners. Describe: Fit Models: These impeller bolts are designed for 180 and 280 pool cleaners. Part Number C -55 C55. DURABLE: Made of ABS and PC materials, it is proven to be durable as the system works every day. Works Like New: The white impeller screws always break after exposure to pool chemicals, making them brittle. Pool Cleaner Replacement Kit: You will get 6 impeller screws in plastic and 6 replacement pool cleaner washers. Easy to Install: Install this replacement wheel screw set hassle-free and trouble-free with these screws installed on pool cleaners. Features: Material: ABS and polycarbonate. White. Dimensions (approx.): screws: 2.2 x 1.8 x 0 .8 cm (lower diameter x upper diameter x height). Joint: 2.7 x 0.8 cm (outer diameter x inner diameter). contents: 6 screws. 6 washers.