Product Description Antelco Rigid Riser with Quick Fit Threaded Adapter. The Antelco Rigid Riser with Quick Fit Threaded Adapter range give a variety of solutions when it comes to Installing spray patterns. The Antelco Asta range covers a variety of risers and stake sizes and selection of pre made assemblies. Stake which allows quick assembly of Vari-Rotor Spray, Vari-Jets and Winged Micro Spray Jets Sizes; Antelco Rigid Riser Stake 200mm Antelco Rigid Riser Stake 300mm Antelco Rigid Riser Stake 450mm