Traditional blued needle springs. Now you can match the springs in the woodwinds that use this type of spring. Also, useful for fitting into the small spring hook on some woodwind keys that the standard round spring will not fit into. Leave the needle end alone and cut the spring at the other end to any required length. 100 pc assortments do not come with vials or blocks.Listed below are the D61B sizes we have available. Diameter (in) Length (mm) D61B.0374 X 56.0394 x 62.043 X 60.0433 X 55.044 X 38.044 x 39.5 044 x 42.86.044 X 46.0472 X 62.0512 X 62.0551 X 90.063 X 90 D61A.0138 X 30.0157 X 30.0177 X 54.0197 X 54.0217 X 56.022 X 58.023 X 16.023 X 20.0236 X 56.0256 X 52.0276 X 56.0295 X 56 .0315 X 56.032 X 50.0335 X 58.0354 X 60.036 X 31.036 X 32.5.036 X 35.036 X 36.5.036 X 39.036 X 41.5.036 X 50 Below are some new sizes for D61B's: Blued Needle Springs .0374x56 Replaces .037x50 ... ENGLANDBlued Needle Springs .0394x62 Replaces .040x50 ... ENGLANDBlued Needle Springs .0433x55 Replaces .043x60 ... ENGLANDBlued Needle Springs .0472X62 ... ENGLANDBlued Needle Springs .0512X62 ... ENGLANDBlued Needle Springs .0551x90 Replaces .056x85 ... ENGLANDBlued Needle Springs .0630x90 Replaces .064x85 ... ENGLAND Also Available: D61A Blued Needle Springs size .0138 thru .036D61B Blued Needle Springs size .0374 thru .064D61C Assortment of 100 springsD61D Assortment of 350 springs sorted in vials and a wood holderD61E Assortment of 500 springs sorted in vials and a wood holderD61W Wood block to hold vials
