Auto-Siphon, 3/8" (Standard), from Fermtech
This standard size 3/8 inch Auto-Siphon from Fermtech is great for starting siphons. Just put your full carboy or bucket on a table, hook up your 3/8" or 5/16" inner diameter siphon tubing to your Auto Siphon, let the Auto Siphon fill with some liquid, and with one or two pumps start your siphon. It's easy and sanitary.
Can be clamped to your bucket using the 3/8" auto siphon clamp.