Rebar Safety Caps
			
 
			Cut rebar is very sharp so building code requires these caps.
			Made of high impact plastic with a metal plate embedded in them.
			Need to be OSHA compliant to guard against impalement..
Jackson Safety OSHA #3-7 from Sharpe Safety Supply
			
			http://www.sharpesafety.com/catalog/product-display.php3?ID=418
			
			About $1.15 each with no min quantity and $11 shipping.
Some people say that when the rebar is horizontal you can get away with lower cost safety caps as there is less danger of falling on the protruding rebar. Personally I think it's best to always use OSHA compliant, but the less expensive type are available from Lowes for $9.10 for 25. http://www.lowes.com/ProductDisplay?partNumber=194740-46086-714718&langId=-1&storeId=10151&productId=3363616&catalogId=10051&cmRelshp=req&rel=nofollow&cId=PDIO1 Made by "Steel Linx".