This is a Takahashi 18mm Wide T-Thread to T-Thread Spacer.
Recommended for the TAK Spacer -Male T to Female T -18mm Metal Back (A-8-6)
Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Product title
Vendor
$19.99 | $24.99
Product title
Vendor