Brick Round 2 x 2 Special with Spikes

Technic Pin with Friction Ridges Lengthwise and Center Slots Plate Round 1 x 1 with Solid Stud Technic Pin 1/2 without Friction Ridges Plate Special 2 x 2 with 2 Pins Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] Tile Special 2 x 2 Corner with Cut Corner - Facet Plate Special 2 x 2 with 2 Pin Holes Brick Curved 2 x 1 No Studs [1/2 Bow] Technic Beam 3 x 5 L-Shape Thick Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Tile Special 1 x 2 Grille with Bottom Groove Plate Special 1 x 2 5.9mm Centre Side Towball Socket