2 x 304 Stainless Steel Capillary Straight Tubing OD 4mm ID 3mm Length 250mm (Style 1)
Stainless Steel 304L Seamless Round Tubing, 3/8" OD, 0.319" ID, 0.028" Wall, 12" Length
ELEGOO MEGA 2560 R3 Board ATmega2560 ATMEGA16U2 + USB Cable Compatible with Arduino IDE, RoHS Compliant