Pentair R111616 604A Back Aluminum Algae Brush with Stainless Steel Bristle, 6-Inch tools-and-machining They have a bayonet-style connection

They have a bayonet-style connection that fits any 3M™ Bayonet Reusable Respirator offering low breathing resistance and good balance with a slim design

Also fits hayward pro series sand filter models s164t

3M Peltor NEXT Tri-Flange Plugs

Intermatic PF1103T Timer and Thermostat

Pentair R111616 604A Back Aluminum Algae Brush with Stainless Steel Bristle, 6-Inch tools-and-machining They have a bayonet-style connectionPentair R111616 604A Back Aluminum Algae Brush with Stainless Steel Bristle, 6 Inch Algae brush with stainless steel bristles Perfect for removing tough algae on plaster surfaces Snap adapt handle fits most poles Includes 1 brush per pack Measures 8 3 4 inch length by 12 3 4 inch height by 8 3 4 inch width