Nakpunar 8 Oz Emery Sand Powder to Fill Pin Cushions - Make Your Own Abrasive Pincushions 8 oz Abrasive Emery Pincushion filling (Brown or Black color due to rock's color) 60 Grit Abrasive Emery Sand also known Emery Grain, Emery Mineral, Emery Powder It'll keep your needles clean, sharp and easy to use 1 lb Emery Sand is equal to 1 cup With 1 lb emery you can fill 3, 5 oz pincushions in 2"x3.5" diameter (it may different due the shape)