Plastazote blocks measuring 150 x 100 x22mm.  (approx 6 x 4 inches)  These Plastazote blocks are ideal for drilling out booby cylinders.  The cylinders can also be used for tying Fabs, Beetles,Daddy patterns and floating fry.  Available in 8 colours.  The generous block width will guarantee value for money.  We have also slightly reduced the depth to ensure that we can send as a large letter, reducing the postage charge to a minimum.