EBBQ Excalibur 355/380 X-Tender Matrix, Realtree Xtra The X-tender adds up to 1" of length to any Excalibur crossbow stock so the long arm shooter's can appreciate the advantage of total comfort shooting Clips on to any Excalibur stock in seconds Increase length of pull by 1/2", 3/4" or 1" Real tree xtra camo for the Matrix 355 and 380 models