Connecting guitar effect pedals side-by-side in a chain in a straight line. Adapters are best because they create the shortest connection between pedals. Shorter than even patch cables. This results in better signal quality.

The Planet Waves PW-P047A is a 1/4" male mono inline adapter, perfect for connecting effects pedals.
Planet Waves adaptors utilize the highest quality conductors and components to provide convenience, maximum power, and clean signal transfer.
Planet Waves cables are the ultimate musician's cable. Utilizing exclusive In=Out Technology for pure signal reproduction, Planet Waves cables are built tough to withstand gigs and come with a limited lifetime guarantee. Planet Waves is a part of the D'Addario and Co. family of brands, the global leader in musical accessories.