Easily build and test your electronic circuits and projects with this 6-inch modular breadboard. It provides an easy starting point when fabricating an electronics project; simply connect and remove components in order to test applications before you begin soldering. Make your connections permanent by quickly transferring them to a circuit board (sold separately) using the indexed number and letter grid. Snap-together design makes it easy to attach additional sockets for complex creations. Molded thermoplastic with heavy-duty backing withstands high temperatures. 830 pre-drilled plug-in holes. Replaceable phosphor-bronze/nickel-silver spring clip contacts. Combines bus strip with breadboard. 0.3/0.6-inch center channels. Accepts components with leads having a diameter of .01-.033" (.25-.84mm); .015-.032" (.38-.81mm) recommended. Simply plug in components and interconnect with 22-gauge jumper wire. Initial contact resistance is less than 0.5 milliohm; after multiple uses, it's reduced to less than 0.4 milliohm. Parts Warranty: 90 Days