BA29094: Low Rate Meter Cartridge (yellow)The yellow low rate meter roller is for rates from 0. 91 up to 9. 07 kg ha (2 up to 20 lb acre) for seeds such as flax, canola, and alfalfa. This roller rotates more continuously, minimizing pulsing effect for better metering at low rates. There are 20 flutes on this meter roller. Each flute is 8 mm (0. 31 in.) wide at the top, 2 mm (0. 08 in.) wide at the bottom, and 1. 5 mm (0. 06 in.) deep. NOTE: When metering high rates through a seeding tool with