Big brother to the Knifeblade. DESCRIPTION Classic big brother of the Knifeblade, Bugaboos have precision-ground blades for a consistent taper and a hole in the thickest part of the head to reduce weight without sacrificing durability. Two clip-ins for corner placements and weight reduction TECH SPECS Weight : [No. 4, Long Thin] 76 g (2.7 oz ) Thickness : [No. 4, Long Thin] 4 mm (5/32 in)