Abstract: A tool is disclosed for attaching slotted weights to a fishing line. The tool has a base having a channel and an opening for insertion of the fishing line traversing the channel. An abutment across the channel is located adjacent to the opening. A transfer block is slidably mounted within the channel in the body. The transfer block urges a slotted weight against the abutment to close the slot and attach the weight to the line. Means are provided for moving the transfer block within the channel in the base. The tool also includes a reservoir for storage of a plurality of slotted weights and discharging individual weights into the channel. The reservoir is preferably tubular with a single flat surface for maintaining the weights in proper orientation with a flat orienting surface opposite the slot. The tool also includes a weight removal device attached to be moved with the transfer block, which device opens the slot in the weight and removes the weight from the line.