http://www.resistanceband.com/....crossfit-equipments/ Equipment manufacturers Description Item noSP-13 MaterialWood or ABS ring,nylon straps Place of OriginChina FOB portShanghai,Ningbo etc Supply Ability200,000pcs per month MOQ100pcs per size OEMYes Production time15-35 days Sample timeA:2 days without logo B:6-9 days with custom logo PaymentT/T, Western Union, PayPal, L/C, etc. Specification The gymnastic wood rings are ideal for the huge gains of upper body and core functional strength. Extra sturdy, smooth wooden rings are perfect for gripping, whether it's pulling up, bicep curling, push-ups, hips, platoons, muscle undulati