... Pressed scaffolding sleeve coupler scaffolding sleeve coupler Scaffolding coupler Steel scaffolding sleeve couplerSize: scaffolding sleeve coupler scaffolding sleeve coupler Specification ... 22mm, 23mmCertificationISO9001:2000, CE, SGSBritish Type Pressed Scaffolding Sleeve Coupler with EN74 :1) Material: Q235,2) ... nuts suit standard scaffold spanner.(23mm) 5.replaceable 't' bolts,nuts and washers. 6. ...