ITEM NAME:24 Pcs Stainless Steel Front Back Rear Tattoo Machine Springs Supplies Kit Description: Material: Stainless Steel Length of Front Springs: Approx. 44mm and 33mm Length of Rear Springs: Approx. 35mm Thickness: 0.0157 inch / 0.4mm Package Includes: 12Pcs Front Tattoo machine springs 12Pcs Back Tattoo machine springs SKU: DMO0001444213006669.12Pcs Front Tattoo machine springs. 12Pcs Back Tattoo machine springs. Length of Rear Springs: Approx. Length of Front Springs: Approx. 44mm and 33mm. Material: Stainless Steel.