4mm. aluminium cast shell 4mm. Cast bronze shell. 14″x07″ 1 aluminium cast hoop 1 bronze cast hoop Trick throw off FREE SHIPPING Products that are available in stock are usually ready in 24/48 hours **AVAILABLE FOR PRE-ORDER** If you are ordering a built to order item, you will be notified when it is ready for shipping. **AVAILABLE FOR PRE-ORDER** 8-10 weeks
