The Net Clips Are Lockable In 3 Positions To Provide A Secure Grip Around The Tube Holding The Netting In Place. Simply Squeeze The Sides Of The Clip And Push In The Stopper To Secure In Place.supplied In Packs Of 10 These Netting Clips Offer A Quick And Simple Way To Effectively Secure Your Garden Netting, Also Great For Polythene Sheeting And Garden Fleece.secures Netting To 16mm Diameter Tubesimple To Uselockable In 3 Positions For A Secure Gripclips Wont Scratch The Tubingsupplied In Packs Of 10