FPC Sugarcraft Mould - Bulging Biceps (3 ratings) Cupcake Mould - Bulging Biceps Was £7.00 - Now £3.50! inc. VAT (where applicable) We're more than happy to let you know when we expect more stock. Please email us. Perfectly sized for cupcake toppers and for cake decorations.Quick and easy to use for fabulous results.Use sugarpaste with Gum Tex added, or Florist Paste for best results. Using the tiniest amount of Trex (white vegetable fat) smeared in the mould will make the moulds very easy to pop out. by FPC Sugarcraft. Soft Flexible Silicone Moulds.